cavernostomy

例句：

1. 1. The patient underwent a cavernostomy to treat his penile erection disorder.
   患者接受了肛管成形术治疗他的勃起障碍。
2. 2. The doctor performed an anal conduit during the surgery for the patient's rectum cancer.
   医生在手术中为患者进行了肛管成形术。
3. 3. The patient needed anal sphincter repair after a traumatic injury.
   患者在一次创伤后需要接受肛门括约肌修复手术。